Efficient adiabatic demagnetization refrigeration to below 50 mK with UHV compatible Ytterbium diphosphates $A$YbP${}_2$O${}_7$ ($A=$Na, K)

U. Arjun, K. M. Ranjith, A. Jesche +3

Attaining milli-Kelvin temperatures is often a prerequisite for the study of novel quantum phenomena and the operation of quantum devices. Adiabatic demagnetization refrigeration (…